hm hm hm. i have to admit, i thought the bright area is the water. u shouldnt change sooo much, id let do lara do the talking. maybe the water to be changed slightly. experimenting with different sky colors. difficult, cause its ur style as it is now, and its a very good style.
the savagery on her face is epic! May I suggest to touch up the waterfall more detailed cause its kinda wasted to the background looking half done compared to Lara. perhaps, a slight mist around her to show a more obscured and threatening surrounding. Good work, and all the best!